Filetype
"Space agencies and privat e companies are working hard to solve the various challenges that need to be overcome to take humans to Mars . The journey to Mars has mult ifaceted risks for the crew, includin g radiation exposure. One risk factor that could jeopar dize t he crew's healt h is the radiation dose from a !arge solar partide event (SPE)
This thesis compares traditional machine learning algorithms and large language models (LLMs) in developing personalized recommender systems to enhance passenger experiences on flights. Traditional methods like collaborative filtering have been widely used but face challenges such as data sparsity and cold-start problems. LLMs, with their advanced natural language processing capabilities, offer pr
In topology optimization, iterative, gradient-based methods are used to find the material distribution of structures which maximizes some objective function, typically the structures' stiffness, or in some cases the fundamental frequency. Finite element analysis is used to compute the structural response in each iteration, leading to large systems of equations. Several hundred iterations may b
As the consumption of dairy is a common staple in the Nordic and European diet and culture, better understanding of the dairy industry as a whole, and especially the cheese industry is needed to aim for a more sustainable production. This project aims to offer an extended approach on the rennet coagulation of milk, analysing the gelling properties of skim milk samples at different pH values (5.5-6
In mobile communications the demand for increased capacity and speeds is a constant. 5G NR is the latest generation which is now seeing widespread adoption. Crucial technologies like Massive MIMO and beamforming are enabled by the use of large antenna arrays. While these arrays allow a 5G network to handle larger amounts of data at higher speeds they do have drawbacks. Specifically, the power requ
The aim of this study was to examine the professional’s experience of children’s computer use in families where the parents are seeking advice considering the question. Media writes about that the problem only can be found in the child and that most parents are in need of assistance. The study was based on qualitative interviews with five professional’s that have had contact with parents who were
Automatic segmentation of organs and tissues in computed tomography (CT) images can aid clinicians in anatomical contextualization for planning surgery or dosimetry. CT scans can cover varying axial ranges of the body. This thesis aims to develop a neural network based on vision transformers for segmenting organs and tissues in CT images of arbitrary axial ranges. Two models are presented, one bas
Titel: Valutarisken inom Stockholmsbörsen, en kvantitativ undersökning av OMXS30- bolagens valutaexponering. Seminariedatum: 1 juni 2023. Ämne/kurs: FEKH89, Examensarbete i finansiering på kandidatnivå. Författare: Felix Hult, Mahdi Rahideh & André Rosdahl. Handledare: Göran Andersson. Nyckelord: Valutarisk, valutaexponering, OMXS30, aktieavkastning, hedging. Forskningsfråga: 1. Påverkas värdeTitle: The Foreign Exchange Risk of the Stockholm Stock Exchange, a Quantitative Analysis of the Foreign Exchange Risk Exposure of OMXS30-Firms. Seminar date: 1 June 2023. Course: FEKH89, Bachelor’s Thesis in Corporate Finance. Authors: Felix Hult, Mahdi Rahideh & André Rosdahl. Advisor: Göran Andersson. Key words: Foreign exchange risk, Foreign exchange exposure, OMXS30, stock return, hedging
Today there are still single family houses with direct electric heating systems, even though this is an expensive and inefficient way of heating a house. It is common to install an air-to-air heat pump that requires less electricity to produce the same amount of heat as a direct electricity heating system. These heat pumps do not produce any energy for domestic hot water since the water is heated
De allmänna hänsynsreglerna som återfinns i 2 kap. MB infördes i syfte att miljöaspekten skulle generellt öka i samhället och att de ska användas som ett medel att uppfylla målet om hållbar utveckling. Hänsynsreglerna ska tillämpas i den mån det inte är orimligt enligt 2 kap. 7 § MB. Åtgärder och försiktighetsmått ska vara miljömässigt motiverade utan att vara ekonomiskt orimliga. Det är emellerti
Background: Sweden is a high endemic region for multiple sclerosis (MS), a neurologic disorder characterized by repeated inflammatory episodes affecting the CNS. The disease has its peak age of onset at approximately 30 years and affects women twice as often as men. The young age of onset makes MS one of the major causes of reduced capacity to work due to neurologic disease in Western society. Nat
Populärvetenskaplig sammanfattning Evolution av stabilitet i ett rovdjur-bytessystem För att göra en matematisk modell av hur rovdjur och byten växelverkar med varandra ställer man upp varsin ekvation för populationernas tillväxthastighet. Dessa beskriver hur rovdjuren och bytena beror av varandra och tiden. Eftersom rovdjuren är beroende av att äta byten för att överleva påverkar de bytespopulaAbstract This master's thesis aim to see if fluctuations in the environment can make a stable predator-prey system naturally evolve into an unstable system. In the paper “Prey adaptation as a cause of predator-prey cycles” (Evolution, 1997), Abrams and Matsuda uses numerical methods to investigate the stability properties of a predator-prey system and looks at the effect that the unstable pop
Bone scintigraphy images are used to investigate the presence of metastases in patients with prostate cancer. An analysis of these images indicates the proportion of cancer in the bones; the Bone Scan Index (BSI). This value is an important prognostic factor used to predict the future for the patients. It is common to extend the examination with a combination of SPECT and CT images to be able to s
Deposition of aerosol nanoparticles using an electrostatic precipitator is widely used in the aerosol community. Despite this, basic knowledge regarding what governs the deposition has been missing. This concerns the prediction of the size of the particle collection zone, but also, perhaps more importantly, prediction of the nanoparticle concentration distribution on the substrate, both of which a
The language that individuals use for expressing themselves contains rich psychological information. Recent significant advances in Natural Language Processing (NLP) and Deep Learning (DL), namely transformers, have resulted in large performance gains in tasks related to understanding natural language. However, these state-of-the-art methods have not yet been made easily accessible for psychology
This paper discusses the morpho-syntax of phrasal proper names likeDeutsche Bahn ‘German Railway’ and Norske Skog ‘Norwegian Forest’ in Germanand Norwegian. As regards determiner elements, there are three types of phrasalproper names in German: some proper names do not have a definite article, some do,and yet others exhibit a possessive. Depending on the syntactic context, the first twotypes patteThis paper discusses the morpho-syntax of phrasal proper names like Deutsche Bahn ‘German Railway’ and Norske Skog ‘Norwegian Forest’ in German and Norwegian. As regards determiner elements, there are three types of phrasal proper names in German: some proper names do not have a definite article, some do, and yet others exhibit a possessive. Depending on the syntactic context, the first two types
We present novel developments for the highly efficient evaluation of complex linear response functions of a multiconfigurational self-consistent field (MCSCF) wave function as implemented in MultiPsi. Specifically, expressions for the direct evaluation of linear response properties at given frequencies using the complex polarization propagator (CPP) approach have been implemented, within both the
Introduction: The co-occurrence of lupus nephritis (LN) and chronic kidney disease (CKD) is associated with an excess risk of infection. However, it remains unknown whether the infection risk differs between LN with moderate and advanced CKD (LN-CKD) and other CKD etiologies. Methods: Using data from the Swedish Renal registry 2006-2021, we identified 14,128 patients (median age 68 years, 64% men,
